Filter for oil and other lubricants



G. C. SCHMIDT. FILTER FOR OIL AND OTHER LUBRICANTS.

APPLICATION FILED OCT. 14, 1919.

1,360, 149. Patented Nov. 23, 1920.

ATTORNEYS ill lirf lhlltdll t). SCHMIDT,

HF nousron, lll lxllitll FILTER, FOR OIL ANl"l O'IHhllt LUBRICANTS.

Specification of Letters Patent.

Patented ltlov, 2d, lathe Application nlerl October 14, 1919. Flerial No. 330,659.

ful Improvements in Filters for Oil and @ther Lubricants, of which the following is a specification lhisdnvention"relates to new and useful improvements in a filter for oil and other lubricants. Une object of the invention 18 to provide, a device of the character de scribed, which is specially designed for the purpose of cleansing oils, particularly waste oils. Lubricating oils used in machinery such as internal combustion engines and the lilre soon become filled with carbon, parti- ,cles of metal and other foreign matter to such an extent that it is of little or no value as a lubricant and must be removed from the machinery and a new oil supplied 1H4 stead. This waste oil is usually discarded as worthless but, as a matter of fact, it contains a high percentage of lubricant and it is only necessary to cleanse the same of foreign matter in order torender it a high grade lubricating oil. The filter herein de scribed has been designed for the purpose of treating this waste oil and cleansing all foreign matter therefrom.

Another object of the invention is to provide a filter of the character described which is of simple construction and may be cheaply and easily manufactured.

With the above and other objects in View the invention has particular relation to certain novel features of construction, operation and arrangementof parts, an example of which is given in this specification and illustrated in the accompanying drawing, wherein:-

The figure shows a side elevation of the filter partially broken away for the sake of illustration. a

Referring tothe drawing the numeral 1, refers to a cylindrical metallic tank, havin the removable covering 2 and within this tank there is' a cylindrical oil rece tacle 3, having a common bottom'with said tanlr and spaced from the walls thereof, providing a water chamber 4: through which heated Water may circulate around the rece tacle 3 to heat the contents thereof. ater is admitted to the bottom of this chamber through the inlet pipe 5, which is controlled by the valve 6 and when said chamber is filled, the overflow will be drained off through the down spout 7 carried by the wall of the tank 1. The heated water is circulated around the oil receptacle 3, which is filled either wholly or partially with the oil to be cleansed. 'lhis receptacle maybe filled with the waste oil by renioving covering 2 of the tanlr.

When the waste oil is placed in the receptacle 3, there is mined therewith soda ash in the proportion of about one pound of soda ash to 10 gallons of oil, The soda ash, however, is dissolved in water previous to the mining, This soda ash is composed -of one part, sodium carbonate and one part sodium chlorid. The sodium carbonate is a good cleanser and the sodium chlorid neutraliaes the carbonate and prevents it from injuring the oil. However, Golddust or other washing compound may be used instead of the soda ash.

The numeral 8 refers. to a steam or air line which is controlled by the valve 9 and which entersgthe receptacle 3 at the bottom and whose inner end extends upwardly within said receptacle and is perforated] Hot air or hot steam is forced through said line 8 and out through said perforations into vthe oil, further heating the same and can ing a violent ebullition thereof, thoroughly mixing the same with the washing compound used and causing the water and other foreign matter in the oil to become sepa rated from the oil and to gradually settle to the bottom of the receptacle. Forthe purpose of permitting this settling to talre place more rapidly the valve 9 may be closed at the proper time and the pure oil will collect at the top and the water and foreign matter at the bottom and this latter may then be drawn off through the outlet pipe 10 which leads from the bottom of the receptacle 3 and is controlled by the valve ll.

The numeral 193- refers to an inlet water pipe which enters the bottom of the receptacle 3 and which is controlled by the valve 13. Through this pipe pure water may be admitted to the receptacle to raise the oil, which floats thereon, to the desired height in the receptacle.

Fastened to one side of the tank on the outside, there is atest trough 14, which inclines and whose up or face 15 has a. reflect ing surface, preferably being nickel plated and s acecl at a uniform distance above this trough and the test cocks 16, 16, 16, which heme-e lead out from the receptacle. When it is desired to test the lubricant it nfferent points, the corresponding 000K ;6 inav he opened and the lubricant Wlll be oermltteu to drip on the trough 14: in small quantities and the drippings will spread out over the reflecting surface 13. and from in 1nsnec tion of these samples it can he reauilv determined Whether or not they contain ahv I'oreigrxi matter or are entirely cleansed.

hen the oil is thoroughly :ieansed it may be drawn off through me iischarge spout 17, Which is controlled by the valve 18 and in order to draw off all or' the lubricant contained in the receptable vater mav be gradually admitted through the oipe 12 to gradually elevate the lubricant is it 15 being drawn OK so that all of the lubricant in the receptacle may be aroue ht within the range of the spout LT. ind iischarged therethrough.

What I claim is:

1. A device of the character tescribedi including a tank. an oil receptacle arranged Within said tank and spaced from the walls thereof, to form a heating chamber oetween them, a means for circulating i neatlng fluid through said chamber. 1 test trough secured to the vali of the tank and a test och Leading from said receptacle through 1101). samples or the contents thereof may e USCDMQQQ ;nto said trough.

4i ievrce or he -'haracter described, ncluuine i :anln i llUllCdllt receptacle ar- ZIDQQG :oncentricailv vithin the tank and paced from the rails thereofi forming a 11E fluid Yltlllfl the )IIIIQQ :nto a reflecting surface and a plural- :v or test COCKS communicating; with said reentacle and arranged above S:ll(l trough and :irough lllCll -.amn1es of the contents of aid receptacle niav we discharged into said IOHQ'D.

. :estnnonv vnereor l have SLQDGU my LIIIQ to this specification 111 the presence of F URGE C. SCHMIDT.

' tnesses:

, "c Hanna-nun n. -i. QATHEY. 

